Supporting rod device for camp bed and camp bed

Abstract

The invention relates to a support rod device for a camp bed and the camp bed, the support rod device comprises a support rod assembly, the support rod assembly comprises a first support rod and a second support rod, the first end of the first support rod and the first end of the second support rod are sleeved together and can move along the length direction of the first support rod; a first limiting check block capable of moving in the length direction of the first supporting rod is arranged at the position, close to the first end of the first supporting rod, of the first supporting rod, a second limiting check block is arranged at the first end of the second supporting rod, a locking wrench capable of being unfolded and folded is rotationally connected to the first limiting check block, and the locking wrench is rotationally connected with the first supporting rod through a connecting rod. When the locking wrench is in the folded state, the connecting rod is also folded relative to the first supporting rod, and the locking wrench pushes the first limiting check block to move along the first supporting rod to abut against the second limiting check block. The bed has the advantages that the bed cloth can be tensioned in a more labor-saving manner in the unfolding process of the supporting rod assembly.

Description

Technical Field

[0001] The invention relates to the technical field of camp beds, and in particular to a support rod device for a camp bed and the camp bed. Background Art

[0002] Camp beds are usually made of a wooden or metal frame tied with canvas and other materials. They can be folded into a smaller size for easy carrying. They are particularly suitable for use in outdoor activities such as camping, fishing, and outdoor adventures. In the civilian field, camp beds are also widely used in hospital care, office lunch breaks, and other scenarios.

[0003] For example, the Chinese utility model patent application with application number CN202221604387.8 discloses a foldable camp bed with a small storage volume, comprising a first side bar and a second side bar arranged in parallel and at intervals, the first side bar and the second side bar are connected by a plurality of foldable bottom support assemblies, and the plurality of bottom support assemblies are arranged at intervals in a straight line direction; one end of each bottom support assembly is detachably connected to the first side bar, and the other end is detachably connected to the second side bar. The bottom support assembly comprises a first support leg and a second support leg hinged to each other, the first support leg and the second support leg both comprise an arc-shaped support rod, and a support rod lock is installed at the hinge of the arc-shaped support rods of the two. The support rod lock comprises a lock seat sleeved on the arc-shaped support rod, the middle part of the lock seat is hinged to the two arc-shaped support rods through a rotating shaft, one side of the lock seat is detachably connected to one arc-shaped support rod through a locking structure such as an elastic lock sheet, and the other side of the lock seat is detachably connected to the other arc-shaped support rod through a latch.

[0004] The camp bed in the above patent application still has certain shortcomings in actual use: first, when the first and second supporting legs of the camp bed are rotated and opened, especially when they are close to being fully opened, the user needs to exert a lot of effort to fully open the two supporting legs to achieve the tensioning of the bed cloth, otherwise, the bed cloth of the camp bed will be relatively loose and uncomfortable. Secondly, the first and second supporting legs of the bottom support assembly of the camp bed are hinged together, and the width of the bed cannot be adjusted, which reduces the user's experience.

[0005] Therefore, the existing camp bed support rod device and the camp bed need further improvement. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a support rod device for a camp bed that can more labor-savingly tension the bed cloth during the unfolding process in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a support rod device for a camp bed with adjustable length in view of the current status of the prior art.

[0008] The third technical problem to be solved by the present invention is to provide a camp bed capable of tightening the bed cloth more labor-savingly during the unfolding process in view of the current status of the prior art.

[0009] The technical solution adopted by the present invention to solve the first technical problem is: a support rod device for a camp bed, including a support rod assembly, wherein the support rod assembly includes a first support rod and a second support rod, the first end of the first support rod and the first end of the second support rod are sleeved together and can move relative to each other in the length direction of the first support rod, the first support rod is provided with a first limit stopper that can move along the length direction of the first support rod adjacent to the first end thereof, the first end of the second support rod is provided with a second limit stopper that can form a limit fit with the first limit stopper in the length direction of the first support rod, the first limit stopper is rotatably connected to a locking wrench that can be expanded and retracted relative to the first support rod, the locking wrench and the first support rod are also rotatably connected via a connecting rod, the first end of the connecting rod is rotatably connected to the first support rod, and the second end of the connecting rod is rotatably connected to the locking wrench, when the locking wrench is in a retracted state, the connecting rod is retracted relative to the first support rod, and the locking wrench pushes the first limit stopper to move along the first support rod and abuts against the second limit stopper.

[0010] Generally speaking, the sliding cooperation structure between the first limit stop and the first support rod can be a guide groove extending along the length direction of the first support rod on the first support rod, and the first limit stop is slidably limited in the guide groove, or the first limit stop is directly used as a sliding sleeve structure sleeved outside the first support rod. Preferably, in order to simplify the sliding cooperation structure between the first limit stop and the first support rod and to ensure that the sliding process of the first limit stop (driven by the locking wrench) along the first support rod is smoother and avoid jamming problems, the first end of the second support rod has a socket into which the first end of the first support rod can be inserted, the first limit stop is a sliding sleeve sleeve sleeved outside the first support rod, and the second limit stop is a fixed sleeve sleeved outside the first end of the second support rod and fixed relative to the second support rod. It can be imagined that the second support rod is inserted into the first support rod, that is, the first support rod is sleeved outside the second support rod, and a sliding groove extending along the length direction is opened on the first support rod, and a part of the sliding sleeve passes through the sliding groove and extends into the first support rod and can be against the end of the second support rod.

[0011] In order to reduce the friction between the first limit stop and the first support rod and make the sliding process of the first limit stop relative to the first support rod smoother, at least two guide ribs are distributed circumferentially on the inner wall of the first limit stop, both protruding outward and extending along the length direction of the first support rod.

[0012] In order to be able to securely maintain the locking wrench in a folded state relative to the first support rod, a fixing seat is provided on the first support rod on the side of the first limit block away from the second support rod. When the locking wrench is in the folded state, the locking wrench and the fixing seat are locked by a locking assembly.

[0013] In order to simplify the structure of the lock assembly, the locking wrench is provided with a first receiving groove on one side facing the fixing seat, in which the side of the fixing seat can be received, the locking wrench assembly includes a first pressing button and a first elastic convex buckle, the first elastic convex buckle is provided on the fixing seat and can be elastically retracted, the inner wall of the first receiving groove of the locking wrench is provided with a first clamping groove in which the first elastic convex buckle can be clamped, the first pressing button is provided on the outer wall of the locking wrench, and corresponding to the first clamping groove, the first pressing button includes a pressing button body and a push rod connected to the pressing button body and movably limited in the first clamping groove. The above structural design makes the first pressing button exposed on the outside of the locking wrench, so that the user can directly press the outside of the locking wrench to unlock, thereby improving the unlocking efficiency of the locking assembly.

[0014] Considering that the first elastic convex buckle of the integrated spring sheet structure is usually made of metal (such as stainless steel, copper, iron, aluminum, etc.) or plastic, long-term pressure or frequent deformation will cause material fatigue, so that the elasticity of the spring sheet will gradually weaken. In severe cases, it will get stuck and cannot be effectively reset, so that the locking between the locking wrench and the fixing seat fails. For this reason, the locking wrench is provided with a first receiving groove on the side facing the fixing seat, in which the side of the fixing seat can be received. The locking buckle assembly includes a first pressing button, a first elastic member and a first elastic convex buckle. The inner wall of the first receiving groove of the locking wrench is provided with a first receiving groove on which the side of the fixing seat can be received. The first elastic convex buckle is inserted into the first slot, the first pressing button is arranged on the outer wall of the locking wrench and corresponds to the first slot, the first pressing button includes a pressing button body and a push rod connected to the pressing button body and movably limited in the first slot, the interior of the fixing seat defines a placement chamber, and the two opposite side walls of the fixing seat are provided with first through holes that pass through the placement chamber, there are two first elastic convex buckles, which are movably limited in the two first through holes, and the first elastic member is arranged between the two first elastic convex buckles, so that the two first elastic convex buckles have a tendency to move away from each other. The above-mentioned first elastic member can adopt various existing technologies, and can include various elastic elements such as compression springs, torsion springs, and spring leaves, but in order to better cooperate with the above-mentioned first elastic convex buckle, the first elastic member preferably adopts a compression spring structure. It can be imagined that the above-mentioned first elastic member can also be omitted, and the two first elastic convex buckles are designed as an integrated spring sheet structure, and the spring sheet structure itself has a certain deformation elastic reset ability.

[0015] As another feasible solution, the locking wrench is provided with a first receiving groove on the side facing the fixing seat, in which the side of the fixing seat can be received, and the locking assembly includes a third limit stopper and a limit stop rib, and there are two third limit stops, and the two third limit stops protrude from the two opposite side walls of the first receiving groove in a direction close to each other, and there are two limit stop ribs, and the two limit stop ribs protrude outward from the two opposite side walls of the fixing seat, and can form a limit fit with the two third limit stops. The third limit stopper and limit stop rib of the above-mentioned locking assembly can be directly formed on the corresponding fixing seat or locking wrench, which reduces the number of parts, simplifies the assembly process of the locking assembly, and reduces the production cost.

[0016] A feasible technical solution adopted by the present invention to solve the second technical problem is: the second end of the connecting rod has a first pin shaft, the locking wrench is provided with a first receiving groove for receiving the side of the fixing seat on the side facing the fixing seat, and at least two first locking holes arranged at intervals along the length direction of the locking wrench and a first sliding groove connecting the first locking holes are provided on the two opposite side walls of the first receiving groove, and the two ends of the first pin shaft can be inserted and rotated to be limited in the first locking holes on the two opposite side walls of the first receiving groove. When it is necessary to adjust the width of the camp bed (that is, the length of the support rod), the locking wrench is pulled and unfolded, so that the first pin shaft of the second end of the connecting rod is correspondingly inserted into the different first locking holes on the locking wrench, and the locking wrench is folded relative to the fixing seat to complete the width adjustment of the camp bed. Among them, the first sliding groove of the first locking hole is arranged on the side wall of the first receiving groove of the locking wrench, which can avoid the problem of pinching the user's hand, and is safer and more reliable.

[0017] Another feasible technical solution adopted by the present invention to solve the second technical problem is: the second end of the connecting rod is connected to a connecting seat that can rotate relative to the connecting rod and a pressing locking rod assembly symmetrically arranged on the left and right sides of the connecting seat; the locking wrench is provided with a first receiving groove on the side facing the fixing seat for the side of the fixing seat to be received therein; the inner wall of the first receiving groove is provided with at least two second locking holes arranged at intervals along the length direction of the locking wrench and a second sliding groove connecting the second locking holes; the position where each second locking hole connects to the second sliding groove is a shrinkage; each second locking hole and the second sliding groove both penetrate from the outer wall of the locking wrench to the first receiving groove Each push lock rod assembly includes a lock rod, a second elastic member and a second push button. The second elastic member is pressed between the lock rod and the connection seat, and makes the lock rod always have a tendency to move toward the side away from the connection seat. The outer end of the lock rod passes through the second lock hole or the second slide groove and is connected to the second push button provided outside the locking wrench. The lock rod includes a large rod and a small rod arranged in sequence along the axial direction. The large rod is far away from the second push button, while the small rod is close to the second push button. The large rod can be inserted into the second lock hole, but cannot slide into the second slide groove through the shrinkage. The small rod can slide into the second slide groove through the shrinkage. The above-mentioned second elastic member can adopt various existing technologies, and can include various elastic elements such as compression springs, torsion springs, and spring leaves. However, in order to better cooperate with the above-mentioned connection seat and lock rod, the second elastic member preferably adopts a compression spring structure. When the width of the camp bed (i.e., the length of the support rod) needs to be adjusted, the locking lever is pulled and the second push button is pressed to make the large rod of the locking lever come out of the second locking hole, then slide into the second slide groove, and move along the second slide groove to be inserted into the corresponding second locking hole, then the second push button is released, and the large rod of the second push button can be inserted into the second locking hole to avoid being pulled out and return to the second slide groove, and then the locking lever is folded relative to the fixed seat to complete the width adjustment of the camp bed. This locking lever assembly with the outer wall of the locking lever exposed outside the second push button makes the unlocking and locking operations of the user more convenient, and the width adjustment process of the camp bed is more efficient.

[0018] The technical solution adopted by the present invention to solve the third technical problem is: a camp bed, including a bed cloth, a first side rod and a second side rod arranged on the left and right sides of the bed cloth, and a support rod device arranged at the bottom of the bed cloth and connected between the first side rod and the second side rod, the support rod device including at least two groups of support rod assemblies arranged at intervals along the length direction of the bed cloth, and the support rod device adopts the above-mentioned support rod device for a camp bed.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the locking wrench is rotatably arranged on the first limit block that can move along the length direction of the first support rod, and is rotatably connected to the first support rod through a connecting rod, so that when the locking wrench is folded relative to the second support rod, the connecting rod is also folded relative to the first support rod, which can push the first limit block to move along the first support rod and abut against the second limit block, and then push the second support rod to move outward and stretch, so as to achieve the effect of tightening the bed cloth. Due to the lever principle, the folding and locking process of the locking wrench is relatively labor-saving, which facilitates the disassembly and assembly of the support rod assembly of the camp bed. In addition, since the locking wrench is folded relative to the first support rod, the connecting rod is also basically in a state of being folded relative to the first support rod, that is, the extension direction of the connecting rod and the locking wrench is basically consistent, so the locking wrench is in a deadlocked state at this time, not easy to loosen, and the locking is more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a camp bed according to Embodiment 1 of the present invention;

[0021] Figure 2 This is a front view of the camp bed of Example 1 of the present invention (in a first use state);

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the camp bed of Example 1 of the present invention without the bed cloth;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the support rod assembly of the camp bed according to Embodiment 1 of the present invention;

[0024] Figure 5 This is an exploded view of a support rod assembly of a camp bed according to Embodiment 1 of the present invention;

[0025] Figure 6 for Figure 2 Sectional view at AA in the middle;

[0026] Figure 7 for Figure 2 Sectional view at the middle BB;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the locking wrench and various components arranged thereon according to Example 1 of the present invention;

[0028] Fig. 9 for Figure 8 An exploded view of the locking wrench and the components arranged thereon shown in FIG.

[0029] Fig.10 It is a three-dimensional structural schematic diagram of the support rod assembly of the camp bed according to Example 1 of the present invention (the locking wrench is in the state);

[0030] Fig.11 for Figure 2 Sectional view at CC;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the headstock of Example 1 of the present invention;

[0032] Fig.13 It is a front view of the headstock of embodiment 1 of the present invention;

[0033] Fig.14 It is a schematic diagram of the three-dimensional structure of the headstock of Embodiment 1 of the present invention from another angle;

[0034] Fig.15 This is a process diagram of the locking wrench of the camp bed in Example 1 of the present invention being biased from the unfolded state to the folded state (the camp bed is in the second use state);

[0035] Fig.16 It is a schematic diagram of the three-dimensional structure of the support rod assembly of the camp bed according to the second embodiment of the present invention;

[0036] Fig.17 This is a schematic diagram of the three-dimensional structure of the support rod assembly of the camp bed according to Embodiment 2 of the present invention after omitting components such as a locking wrench;

[0037] Fig.18 It is a schematic three-dimensional structure diagram of the locking wrench of the support rod assembly of the camp bed according to Example 2 of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below with reference to the accompanying drawings.

[0039] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0040] Example 1

[0041] Figure 1-Figure 15A preferred embodiment of the support rod device for a camp bed and the camp bed of the present invention is shown. The camp bed comprises a bed sheet 5, a first side rod 51 and a second side rod 52 arranged on the left and right sides of the bed sheet 5, and a support rod device arranged at the bottom of the bed sheet 5 and connected between the first side rod 51 and the second side rod 52. The first side rod 51 and the second side rod 52 are parallel, and the left and right sides of the bed sheet 5 are designed with loops for the first side rod 51 and the second side rod 52 to pass through. The support rod device comprises at least two groups of support rod assemblies 1 arranged at intervals along the length direction L of the bed sheet 5, such as Figure 1 Three support rod assemblies 1 are shown, and each support rod assembly 1 is arranged to extend along the width direction W of the bed cloth 5 .

[0042] See also Figure 3 The support rod assembly 1 includes a support rod, a support foot, two head seats arranged at both ends of the length direction of the support rod, and a first support rod 171 and a second support rod 172 respectively arranged on the two head seats. Two support feet are also arranged on each head seat.

[0043] See also Figure 4 and Figure 5 The support rods include a first support rod 11 and a second support rod 14, wherein the first end of the first support rod 11 and the first end of the second support rod 14 are sleeved together and can move along the length direction L1 of the first support rod 11. Figure 5 As shown, the second support rod 14 is designed as a hollow pipe structure at least in the portion adjacent to the first end thereof, and has a socket 140 at the first end thereof for inserting the first end of the first support rod 11 therein. In a preferred embodiment, in order to reduce the weight of the camp bed and save material costs, the first support rod 11 and the second support rod 14 are both hollow pipes. The cross-sections of the first support rod 11 and the second support rod 14 are both elliptical structures. Among them, the size of the cross-section of the outer peripheral wall of the portion where the first end of the first support rod 11 is located is slightly smaller than the size of the cross-section of the inner hole of the portion where the first end of the second support rod 14 is located, so that the first support rod 11 can be inserted into the inner hole of the second support rod 14 in a plug-in manner, and the two will not have a large shaking problem.

[0044] The two headstocks of the support rod assembly 1 include a first headstock 61 disposed at the second end of the first support rod 11 (i.e., an end away from the second support rod 14) and a second headstock 62 disposed at the second end of the second support rod 14. The first headstock 61 and the second headstock 62 have the same structure. The first headstock 61 is rotatably connected to two support legs and a first support rod 171, and the two support legs on the first headstock 61 are respectively recorded as a first support leg 161 and a second support leg 162. The second headstock 62 is rotatably connected to two support legs and a second support rod 172, and the two support legs on the second headstock 62 are respectively recorded as a third support leg 163 and a fourth support leg 164. Specifically, the bottom of the first frame head seat 61 has a second receiving groove 66 which is concave upward and extends in a direction parallel to the length direction of the support rod. One end of the first support rod 171 is rotatably connected to the two opposite side walls of the second receiving groove 66 through a pin shaft 91, and when deflected upward to the limit position, the first support rod 171 tilts from bottom to top toward the side away from the second frame head seat 62. The other end of the first support rod 171 is connected to the first side rod 51. Specifically, the other end of the first support rod 171 is provided with a first clamping opening 1710 with an opening facing outward (i.e., the opening is away from the side where the second frame head seat 62 is located), and the first side rod 51 can be clamped into the first clamping opening 1710. The limit position of the upward deflection of the first support rod 171 can be defined by the corresponding port edge of the second receiving groove 66. At the same time, the second receiving groove 66 also defines that the deflection direction of the entire deflection process of the first support rod 171 is basically in one plane, and there will be no problem of left and right deflection, thereby ensuring the reliability of the support of the first support rod 171. When the first support rod 171 is deflected downward to the extreme position, it is received in the second receiving groove 66 of the first frame head seat 61. Similarly, the bottom of the second frame head seat 62 also has a second receiving groove 66 that is recessed upward and extends in a direction parallel to the length direction of the support rod. One end of the second support rod 172 is rotatably connected to the two opposite side walls of the second receiving groove 66 through the pin shaft 92, and when it is deflected upward to the extreme position, the second support rod 172 tilts from bottom to top toward the side away from the first frame head seat 61, and the other end of the second support rod 172 is connected to the second side rod 52. Specifically, the other end of the second support rod 172 is provided with a second clamping opening 1720 with an opening facing outward (i.e., the opening is away from the side where the first frame head seat 61 is located), and the second side rod 52 is clamped in the second clamping opening 1720. The limit position of the second support rod 172 deflecting upward can be limited by the corresponding port edge of the second receiving groove 66. At the same time, the second receiving groove 66 also limits the deflection direction of the second support rod 172 in the entire deflection process to be basically in one plane, and there will be no left-right deflection problem, thereby ensuring the support reliability of the second support rod 172. When the second support rod 172 deflects downward to the limit position, it is received in the second receiving groove 66 of the second frame head seat 62.

[0045] See also Figure 12-14The structure of the first frame head seat 61 is the same as that of the second frame head seat 62. The connection and cooperation structure between the first frame head seat 61 and the first supporting leg 161, the second supporting leg 162, the first strut 171 and other components is also the same as the connection and cooperation structure between the second frame head seat 62 and the third supporting leg, the fourth supporting leg, the second strut 172 and other components. The following is explained by taking the first frame head seat 61 as an example: the two supporting legs (that is, the first supporting leg 161 and the second supporting leg 162) are rotatably arranged on the two opposite front and rear side walls of the first frame head seat 61. Specifically, the first frame head seat 61 is provided with a first shaft hole 64 which runs through the rear side wall from the front side wall thereof, and a freely rotatable rotating pin 71 is passed through the first shaft hole 64, and the two ends of the rotating pin 71 are exposed from the front and rear side walls of the first frame head seat 61, and are correspondingly inserted into the second shaft holes 1601 of the front and rear two supporting legs, wherein the front and rear two supporting legs are connected to the rotating pin 71 through the positioning pin 72 which radially passes through the second shaft hole 1601, thereby, the front and rear two supporting legs can realize synchronous rotation, that is, when one of the supporting legs is rotated, the other supporting leg also rotates synchronously. More specifically, the front and rear side walls of the first frame head seat 61 are adjacent to the rotating pin 71 to form a guide inclined surface 63 which can make the supporting foot gradually deviate from the vertical direction during the deflection and expansion process relative to the supporting rod, and after the supporting foot is deflected and expanded to the set position, the supporting foot forms a certain inclination angle with the vertical direction, so that the front and rear two supporting feet can be guided by the guide inclined surface 63 during the corresponding deflection and expansion process and automatically open to the figure eight structure. The support legs arranged in an eight-shaped pattern can make the bed more stable and reliable. When the support legs are fully deflected and opened, the angle of inclination formed by the extension direction of the support legs relative to the vertical direction is generally about 20°. On the other hand, the front and rear side walls of the first frame head seat 61 are also provided with a first limit stopper 691 for limiting the downward bias of the corresponding support leg to expand to the extreme angle position and a second limit stopper 692 for limiting the upward folding of the corresponding support leg to the extreme angle position. Specifically, the first limit stopper 691 and the second phase stopper can be a step formed by the change in the front and rear thickness of the first frame head. When the support leg is downwardly biased and expanded to the extreme angle position, the support leg is tilted from top to bottom toward the side away from the second frame head seat 62, thereby ensuring that the camp bed can provide reliable support when subjected to gravity pressure during use. When the support leg is upwardly biased and expanded to the extreme angle position, the extension direction of the support leg is basically parallel to the extension direction of the support rod. More specifically, when the front and rear support legs of the first headrest 61 and the first support rod 171 are folded, the first support rod 171 is located between the front and rear support legs, that is, the three are folded side by side at the bottom of the support rod.The second axial hole 1601 on the front and rear supporting feet is designed to be a movable hole for the supporting feet to deflect around the positioning pin 72 relative to the rotating pin shaft 71. It can generally be designed to be a strip hole, an elliptical hole, or a conical hole structure with a larger outside and smaller inside, which extends in a direction substantially perpendicular to the positioning pin 72, thereby avoiding interference caused by the second axial hole 1601 on the supporting foot in the tilting, deflecting and opening process of the supporting foot.

[0046] In order to keep the support leg stably in this state after deflecting downward and unfolding, the first head frame is also provided with a second elastic convex buckle 33 that can be exposed relative to the side wall of the head frame and can be elastically retracted. A second clamping groove 160 is provided on the side wall of the first end of the support leg at a position corresponding to the second elastic convex buckle 33. When the support leg is deflected downward to the extreme position (that is, when it abuts against the first limit stopper 691 of the first head frame 61), the second elastic convex buckle 33 can be clamped into the second clamping groove 160 to prevent the support leg from deflecting back and ensure the reliability of the support of the support leg.

[0047] See also Fig.11 In some embodiments, the second elastic buckle 33 includes an overall arc-shaped or V-shaped spring sheet, two buckle parts 332 arranged on the spring sheet, and an operating part 333 arranged at two ends of the spring sheet. The two buckle parts 332 are symmetrically arranged on opposite sides of the spring sheet and both protrude outward. The top end points of the two buckle parts 332 are designed as an outwardly convex arc surface structure. The two operating parts 333 can be plastic parts attached to the two ends of the spring sheet, and the volume can be designed to be relatively large. Anti-slip grooves can be set on the two operating parts. The two opposite side walls of the first frame head seat 61 are also provided with second through holes 65 that penetrate to the second receiving groove 66, and the inner wall of the second receiving groove 66 of the first frame head seat 61 is also provided with a second positioning groove 660 that matches the shape of the spring sheet body. When the second elastic buckle 33 is installed, the spring sheet body is arranged in the second positioning groove 660, and the two buckle parts 332 are exposed to the front and rear side walls of the first frame head seat 61 through the two second through holes 65 respectively. The bottom of the opposite side wall of the first frame head seat 61 also has an operation opening 67 that is recessed upward and laterally penetrates to the second receiving groove 66, and the two operation parts 333 of the second elastic convex buckle 33 are located at the two operation openings 67, wherein the bottom of the second elastic convex buckle 33 is higher than the bottom of the first frame head seat 61. Providing the operation opening 67 on the opposite side wall of the frame head seat also facilitates the user to directly press the operation part 333 on the side to release the locking of the second elastic convex buckle 33 on the supporting foot, so that the supporting foot can be quickly deflected and retracted.

[0048] In this embodiment, each support leg on the headstock is rotatably connected to the headstock, and as the rotational position of each support leg relative to the headstock changes, the camp bed has at least a first use state and a second use state: in the first use state, each support leg is deflected downward relative to the support rod and unfolded to serve as a support portion for contacting the ground, thereby being used as a high bed, see Figure 2 In the second use state, each support leg is deflected and retracted upward relative to the support rod and shifted to a position higher than the bottom of the frame head seat, so that each frame head seat serves as a support portion for contacting the ground, thereby being used as a low bed, see Fig.15 The camp bed with this structural design allows users to choose the appropriate height according to their needs, meets the needs of different users, and improves the actual use experience of users.

[0049] Generally speaking, the height of the camp bed in the first usage state as a high bed can be designed to be about 396 mm, and the height of the camp bed in the second usage state as a low bed can be designed to be about 205 mm.

[0050] The front and rear two supporting feet of each headstock are symmetrically arranged with respect to the headstock. In a first usage state, the two supporting feet at one end away from the headstock are far away from each other and arranged in an eight-shaped shape, making the bed more stable and reliable; in a second usage state, the two supporting feet at one end away from the headstock are close to each other and arranged side by side, making the supporting feet in the folded state more compact, smaller in size, and occupying less space.

[0051] In order to ensure the stability of the camp bed when used as a low bed, the bottom surface of each headrest is generally set as a flat wall structure, on which an anti-slip groove 68 can be opened, see Fig.14 .

[0052] See also Figure 5 The first end of the first support rod 11 of the support rod assembly 1 and the first end of the second support rod 14 can be separated, that is, the two can be disassembled for storage, wherein the first support rod 11 and the second support rod 14 are also connected by an elastic rope 80 arranged in the inner holes of the two, so that the user can easily identify the pairing during assembly.

[0053] The first support rod 11 is also provided with a fixing seat 13 and a first limit stopper 12. The first limit stopper 12 is closer to the second support rod 14 and is arranged at the first end adjacent to the first support rod 11. The first limit stopper 12 can move along the length direction L1 of the first support rod 11. In some embodiments, the first limit stopper 12 can be a sliding sleeve sleeved outside the first support rod 11. The first end of the second support rod 14 is provided with a second limit stopper 141. The second limit stopper 141 is a fixed sleeve sleeved outside the first end of the second support rod 14 and fixed relative to the second support rod 14. After the first end of the first support rod 11 is inserted into the socket 140 of the second support rod 14, the sliding sleeve on the first support rod 11 can form a limit fit with the fixed sleeve on the second support rod 14 in the length direction of the first support rod 11. The first limit stopper 12 is rotatably connected with a locking wrench 2 that can be expanded and retracted relative to the first support rod 11. Specifically, the first end of the locking wrench 2 is rotatably connected to the bottom of the sliding sleeve around a pin shaft 93 extending forward and backward, and the locking wrench 2 is also rotatably connected to the fixing seat 13 of the first support rod 11 through a connecting rod 4, wherein the first end of the connecting rod 4 is rotatably connected to the bottom of the fixing seat 13 through a pin shaft 94, and the second end of the connecting rod 4 is rotatably connected to the locking wrench 2. The pin shaft 94 rotatably connected between the connecting rod 4 and the fixing seat 13 and the pin shaft 93 rotatably connected between the connecting rod 4 and the locking wrench 2 both extend in the front-to-back direction.

[0054] Fig.15 The schematic diagram shows the process of the locking wrench 2 of the support rod assembly of the camp bed being deflected from the unfolded state to the folded state. Fig.15 Figure a in the figure shows a state diagram in which the first end of the first support rod 11 has just been inserted into the socket 140 of the first end of the second support rod 14. At this time, the locking wrench 2 is in an expanded state, the distance m1 between the first limit stopper 12 and the fixing seat 13 is relatively small, and the first limit stopper 12 and the second limit stopper 141 of the second support rod 14 have not yet abutted against each other. When the first support rod 11 and the second support rod 14 are plugged into place, the first limit stopper 12 can abut against the second limit stopper 141 of the second support rod 14. At this time, the length dimension of the entire support rod assembly is smaller than the dimension of the bed cloth of the camp bed. It can be understood that in this state, the bed cloth of the camp bed has not been tightened and is in a relatively loose state. Fig.15Figure b in the figure shows the state diagram when the locking wrench 2 is gradually deflected and retracted to a certain angle relative to the first support rod 11 around its first end (the locking wrench is not completely retracted). During this process, the first limit stopper 12 moves away from the fixing seat 13. At the same time, the second limit stopper 141 of the second support rod 14 is pressed by the first limit stopper 12 and also moves away from the fixing seat 13, that is, it moves outward relative to the first support rod 11. The solid arrow in Figure b shows the direction of the second support rod 14 moving outward. At this time, the distance m2 between the first limit stopper 12 and the fixing seat 13 is greater than m1, and the length dimension of the entire support rod assembly is slightly smaller than the size of the bed cloth of the camp bed. It can be understood that in this state, the bed cloth of the camp bed is in a state of being tightened but not completely tightened. Fig.15 Figure c in the figure shows a state diagram in which the locking wrench 2 is completely retracted relative to the first support rod 11. During the action from Figure b to Figure c, the first limit stop 12 is driven by the locking wrench 2 to continue to move away from the fixed seat 13, and the second limit stop 141 of the second support rod 14 is pressed by the first limit stop 12 and continues to move away from the fixed seat 13, thereby completely tightening the bed cloth. When the locking wrench 2 is in the retracted state, the distance m3 between the first limit stop 12 and the fixed seat 13 is greater than m2. Due to the principle of lever, the process of tightening the bed cloth 5 by retracting the locking wrench 2 relative to the first support rod 11 is relatively labor-saving, which facilitates the installation of the support rod assembly 1 of the camp bed. In addition, after the locking wrench 2 is retracted relative to the first support rod 11, the connecting rod 4 is also basically in a retracted state relative to the first support rod 11, that is, the extension direction of the connecting rod 4 is basically consistent with that of the locking wrench 2, and is basically consistent with the length direction of the first support rod 11. Therefore, the locking wrench 2 is in a locked state at this time, is not easy to loosen, and is locked more securely.

[0055] In order to reduce the friction between the first limit stopper 12 and the first support rod 11 and make the sliding process of the first limit stopper 12 relative to the first support rod 11 smoother, at least two guide ribs 120 are distributed along the circumferential direction on the inner circumferential wall of the sliding sleeve, both of which protrude outward and extend along the length direction of the first support rod 11. Figure 6 Eight guide ribs 120 are shown. The fixing seat 13 can be a plastic piece wrapped around the outside of the main body of the first support rod 11.

[0056] In order to further ensure the reliability of the locking wrench 2 in the folded state relative to the fixing seat 13, when the locking wrench 2 is in the folded state, the locking wrench 2 and the fixing seat 13 are locked by a locking assembly. In the present embodiment, a first receiving groove 20 is provided on the side of the locking wrench 2 facing the fixing seat 13, in which the side of the fixing seat 13 can be received. The locking assembly includes a first elastic convex buckle 31 and a first press button 25, wherein the first elastic convex buckle 31 is provided on the fixing seat 13, specifically, the interior of the fixing seat 13 defines a placement chamber 130, and the front and rear side walls of the fixing seat 13 are both provided with first through holes 131 that pass through the placement chamber 130, and there are two first elastic convex buckles 31, which are respectively provided at the two first through holes 131. As shown Figure 7 As shown, the first elastic convex buckle 31 includes a first convex column and a limit stop edge extending radially outward from the outer wall of the inner end of the first convex column, and the outer end of the first convex column is designed as an outwardly convex arc surface structure. When the first elastic convex buckle 31 is installed, the first convex column is movably limited in the first through hole 131 of the fixing seat 13, and the outer end can be exposed relative to the front and rear side walls of the fixing seat 13, and the limit stop edge of the first convex column is correspondingly limited on the inner side of the circumference of the first through hole 131 to prevent the first elastic convex block from slipping outward through the first through hole 131. A first elastic member 32 is also provided between the two first elastic convex buckles 31 to make the two first elastic convex buckles 31 have a tendency to move away from each other. The first elastic member 32 can be a spring, and the inner ends of the two first elastic convex buckles 31 are correspondingly provided with spring positioning holes, and the two ends of the spring are respectively limited in the spring positioning holes of the two first elastic convex buckles 31.

[0057] See also Figure 7 The first receiving groove 20 of the locking wrench 2 has two opposite side walls provided with first slots 21 into which the outer end of the first elastic protrusion 31 can be inserted. A first pressing button 25 is provided on the outer wall of the locking wrench 2 at a position corresponding to the first slot 21. The first pressing button 25 includes a pressing button body 251 and a push rod 252 connected to the pressing button body 251. The push rod 252 can penetrate from the outer wall of the locking wrench 2 into the first slot 21 and can move along its axial direction. The inner end of the push rod 252 is also provided with a second limit stopper protruding radially outward, and the push rod 252 is limited from coming off the locking wrench 2 by the second limit stopper. After the locking wrench 2 is deflected and retracted relative to the fixing seat 13, the first elastic convex buckle 31 on the fixing seat 13 can be automatically inserted into the first slot 21 of the locking wrench 2. When the locking wrench 2 needs to be unlocked, the user presses the first push button 25 to drive the first convex column of the first elastic convex buckle 31 to retract and disengage from the first slot 21, and then pulls the locking wrench 2 downward. In other optional embodiments, the first elastic member 32 can also be omitted, and the two first elastic convex buckles 31 are designed as an integrated spring sheet structure, such as a V-shaped or arc-shaped spring sheet 331 structure, which itself has a certain deformation elastic reset capability.

[0058] A first guiding slope 201 is also provided on the two opposite side walls of the first receiving groove 20 of the locking wrench 2 at an opening position adjacent to the first receiving groove 20, and the second guiding slope 202 is arranged at a position corresponding to the outside of the position of the first card slot 21, which can be used to guide the first elastic protrusion 31 of the fixing seat 13 to smoothly enter the first receiving groove 20 and correspondingly snap into the first card slot 21 of the locking wrench 2.

[0059] In some embodiments, the second end of the connecting rod 4 can be directly rotatably connected to the locking wrench 2 through a fixed pin shaft, but in this connection mode, the overall length of the support rod is fixed and cannot be adjusted, that is, the width of the camp bed is fixed and cannot be adjusted. In order to achieve the purpose of adjustable length of the support rod, in a preferred embodiment, the connecting rod 4 is a flat strip plate structure, and the second end of the connecting rod 4 is connected to a connecting seat 42 that can rotate relative to the connecting rod 4 and a pressing lock rod assembly symmetrically arranged on the left and right sides of the connecting seat 42. In order to facilitate assembly, the connecting seat 42 includes two sub-seat bodies 421, which are symmetrically arranged on the front and rear sides of the connecting rod 4. Specifically, the sub-seat body 421 is disc-shaped as a whole, and the two opposite sides of the two sub-seat bodies 421 have second bosses 4213 extending relatively. During assembly, the second bosses 4213 of the two sub-seat bodies 421 are both inserted into the axial hole of the second end of the connecting rod 4, thereby serving as a pin shaft structure for the connecting rod 4 to rotate relative to the connecting seat 42. The two side surfaces of the two sub-seat bodies 421 that are far from each other are both provided with a concave first positioning groove 4211, and the middle part of the bottom wall of the first positioning groove 4211 also has a positioning column 4212 extending outward. The inner wall of the first receiving groove 20 of the locking wrench 2 is provided with at least two second locking holes 241 arranged at intervals along the length direction of the locking wrench 2 and a second slide 242 connecting the second locking holes 241, wherein the second locking holes 241 and the second slide 242 are all penetrated from the outer wall of the locking wrench 2 to the first receiving groove 20, and the second slide 242 is basically a linear slide and is located on the same side of a row of locking holes formed by the above-mentioned second locking holes 241. The position where each second locking hole 241 connects with the second slide 242 is a constriction 243.

[0060] See also Figure 8 and Fig. 9 Each push lock rod assembly includes a lock rod 43, a second elastic member 44 and a second push button 45.

[0061] The lock rod 43 includes a large rod portion 431 and a small rod portion 432 which are sequentially arranged along the axial direction. The large rod portion 431 is away from the second push button 45, while the small rod portion 432 is close to the second push button 45. The end of the small rod portion 432 is connected to the middle of the second push button 45. The outer diameter of the large rod portion 431 of the lock rod 43 is smaller than the inner diameter of the second lock hole 241, but larger than the width of the constriction 243, so that the large rod portion 431 can be inserted into the second lock hole 241, but cannot slide into the second slide groove 242 through the constriction 243. The outer diameter of the small rod portion 432 of the lock rod 43 is smaller than the width of the constriction 243, so that the small rod portion 432 can slide between the second slide groove 242 and the corresponding second lock hole 241 through the constriction 243. The outer peripheral wall of the large rod portion 431 of the lock rod 43 is also provided with a limiting flange 433 extending radially outward. The outer diameter of the limiting flange 433 is larger than the inner diameter of the second lock hole 241, and can abut against the inner side of the circumference of the second lock hole 241 to form a limit, so that the lock rod 43 cannot escape outward through the second lock hole 241. The second elastic member 44 is preferably a compression spring, which is abutted between the lock rod 43 and the connecting seat 42. Specifically, the inner end of the lock rod 43 is axially provided with a guide channel 434 adapted to the positioning column 4212 of the sub-seat body 421, and the positioning column 4212 is movably inserted in the guide channel 434 of the lock rod 43. The spring is sleeved outside the positioning column 4212 of the sub-seat body 421 and the large rod portion 431 of the lock rod 43, one end of which abuts against the limiting flange 433 of the lock rod 43, and the other end abuts against the main body of the sub-seat body 421. The outer end of the locking rod 43 passes through the second locking hole 241 or the second sliding groove 242 and is connected to the second pressing button 45 provided outside the locking wrench 2. When the width of the camp bed (i.e., the length of the support rod) needs to be adjusted, the locking wrench 2 is pulled and unfolded, and the second pressing button 45 is pressed inwardly, so that the large rod portion 431 of the locking rod 43 is disengaged inwardly from the second locking hole 241, and then slides into the second sliding groove 242, and moves along the second sliding groove 242 and is inserted into the corresponding other second locking hole 241, and then the second pressing button 45 is released. Under the elastic force of the second elastic member 44, the large rod portion 431 of the second pressing button 45 can be automatically inserted into the second locking hole 241 to avoid being disengaged and return to the second sliding groove 242, and then the locking wrench 2 is folded relative to the fixing seat 13 to complete the width adjustment of the camp bed. Since the second pressing button 45 of the locking rod assembly is pressed to expose the outer wall of the locking wrench 2, it is convenient for the user to press it directly, thereby making the unlocking and locking operations of the user more convenient and the width adjustment process of the camp bed more efficient.

[0062] like Fig.15As shown in the figure, the second locking holes 241 on the locking wrench 2 of this embodiment have three groups arranged at intervals along the length direction of the locking wrench 2. As a result, the width of the camp bed can be adjusted in three gears, such as the first gear is the shortest bed distance, the size can be 1200mm, the second gear is the middle bed distance, the size can be 1230mm; the third gear is the longest bed distance, the size can be 1260mm.

[0063] Example 2

[0064] Figure 16-18 Another preferred embodiment of the camp bed support rod device and the camp bed of the present invention is shown. The difference between this embodiment and the first embodiment is that the setting position of the lock hole on the locking wrench 2 and the rotation connection structure with the second end of the connecting rod 4 are different, and the locking assembly between the locking wrench 2 and the fixing seat 13 is also different, as follows:

[0065] The second end of the connecting rod 4 has a first pin 41 extending forward and backward, wherein the first pin 41 can be attached to the second end of the connecting rod 4 through a corresponding plastic part. The two opposite side walls of the first receiving groove 20 of the locking wrench 2 are provided with at least two first locking holes 231 arranged at intervals along the length direction of the locking wrench 2 and a first slide groove 232 connecting the first locking holes 231, wherein the first locking holes 231 and the first slide groove 232 do not penetrate the side wall of the locking wrench 2. The two ends of the first pin 41 on the connecting rod 4 (which can be set as an axially retractable elastic telescopic shaft structure) can be inserted and rotatably limited in the first locking holes 231 on the two opposite side walls of the first receiving groove 20. When the width of the camp bed (i.e., the length of the support rod) needs to be adjusted, the locking wrench 2 is pulled downward to expand, so that the first pin 41 of the second end of the connecting rod 4 slides out of the current first locking hole 231 into the first sliding groove 232 and then slides into another first locking hole 231, and then the locking wrench 2 is folded relative to the fixing seat 13 to complete the width adjustment of the camp bed. Among them, the first sliding groove 232 of the first locking hole 231 is arranged on the inner side wall of the first receiving groove 20 of the locking wrench 2, which can avoid the problem of pinching the user's hand, and is safer and more reliable.

[0066] The first receiving groove 20 of the locking wrench 2 is provided with a third limit stopper 22 on the opposite side walls thereof. The two third limit stoppers 22 are convex block structures extending in the direction of approaching each other. The two opposite side walls of the fixing seat 13 are provided with limit stopper ribs 132 protruding outwards and capable of forming a limit fit with the third limit stopper 22. The limit stopper and the limit stopper ribs 132 together constitute a lock assembly between the locking wrench 2 and the fixing seat 13. The first receiving groove 20 of the locking wrench 2 is provided with a second guide bevel 202 on the opposite side walls thereof at the opening position adjacent to the first receiving groove 20. The second guide bevel 202 is arranged at a position corresponding to the outer side of the third limit stopper 22, and can be used to guide the limit stopper 132 of the fixing seat 13 to pass over the third limit stopper 22 and smoothly enter the first receiving groove 20, and form a limit with the third limit stopper 22 to prevent the locking wrench 2 from falling off relative to the fixing seat 13.

Claims

1. A support rod device for a camp bed, comprising a support rod assembly (1), characterized in that: The support rod assembly (1) comprises a first support rod (11) and a second support rod (14); the first end of the first support rod (11) and the first end of the second support rod (14) are sleeved together and can move relatively in the length direction (L1) of the first support rod (11); the first support rod (11) is provided with a first limit stopper (12) capable of moving along the length direction (L1) of the first support rod (11) adjacent to the first end thereof; the second support rod (14) is provided with a second limit stopper (141) capable of forming a limit fit with the first limit stopper (12) in the length direction (L1) of the first support rod (11); the first limit stopper (141) is provided with a first limit stopper (12) capable of forming a limit fit with the first limit stopper (12) in the length direction (L1) of the first support rod (11); A locking wrench (2) is rotatably connected to the stopper (12) and can be expanded and retracted relative to the first support rod (11); the locking wrench (2) and the first support rod (11) are rotatably connected via a connecting rod (4); a first end of the connecting rod (4) is rotatably connected to the first support rod (11), and a second end of the connecting rod (4) is rotatably connected to the locking wrench (2); when the locking wrench (2) is in a retracted state, the connecting rod (4) is retracted relative to the first support rod (11), and the locking wrench (2) pushes the first limit stopper (12) to move along the first support rod (11) and abut against the second limit stopper (141).

2. The support rod device for a camp bed according to claim 1, characterized in that: The first end of the second support rod (14) has a socket (140) into which the first end of the first support rod (11) can be inserted; the first limit stopper (12) is a sliding sleeve sleeved outside the first support rod (11); and the second limit stopper (141) is a fixed sleeve sleeved outside the first end of the second support rod (14) and fixed relative to the second support rod (14).

3. The support rod device for a camp bed according to claim 2, characterized in that: At least two guide ribs (120) are distributed along the circumferential direction on the inner circumferential wall of the first limit stopper (12), both of which protrude outward and extend along the length direction of the first support rod (11).

4. The support rod device for a camp bed according to claim 1, characterized in that: A fixing seat (13) is provided on the first support rod (11) at a side of the first limit stopper (12) away from the second support rod (14); when the locking wrench (2) is in a folded state, the locking wrench (2) and the fixing seat (13) are locked via a locking assembly.

5. The support rod device for a camp bed according to claim 4, characterized in that: The locking wrench (2) is provided with a first receiving groove (20) on one side facing the fixing seat (13) and capable of receiving the side portion of the fixing seat (13). The locking assembly comprises a first pressing button (25) and a first elastic convex buckle (31). The first elastic convex buckle (31) is provided on the fixing seat (13) and can be elastically retracted. The inner wall of the first receiving groove (20) of the locking wrench (2) is provided with a first clamping groove (21) in which the first elastic convex buckle (31) can be clamped. The first pressing button (25) is provided on the outer wall of the locking wrench (2) and corresponds to the first clamping groove (21). The first pressing button (25) comprises a pressing button body (251) and a push rod (252) connected to the pressing button body (251) and movably limited in the first clamping groove (21).

6. The support rod device for a camp bed according to claim 4, characterized in that: The locking wrench (2) is provided with a first receiving groove (20) on one side facing the fixing seat (13) in which the side portion of the fixing seat (13) can be received, the locking assembly comprises a first pressing button (25), a first elastic member (32) and a first elastic convex buckle (31), the inner wall of the first receiving groove (20) of the locking wrench (2) is provided with a first clamping groove (21) in which the first elastic convex buckle (31) can be clamped, the first pressing button (25) is provided on the outer wall of the locking wrench (2) and corresponds to the first clamping groove (21), the first pressing button (25) comprises A push button body (251) and a push rod (252) connected to the push button body (251) and movably limited in the first slot (21); the interior of the fixed seat (13) defines a placement chamber (130); two opposite side walls of the fixed seat (13) are each provided with a first through hole (131) penetrating to the placement chamber; there are two first elastic protrusions (31), which are respectively movably limited in the two first through holes (131); the first elastic member is arranged between the two first elastic protrusions (31), and the two first elastic protrusions (31) have a tendency to move away from each other.

7. The support rod device for a camp bed according to claim 4, characterized in that: The locking wrench (2) is provided with a first receiving groove (20) on one side facing the fixing seat (13) and capable of receiving the side of the fixing seat (13). The locking assembly comprises a third limit stopper (22) and a limit stop rib (132). There are two third limit stoppers (22). The two third limit stoppers (22) respectively protrude from two opposite side walls of the first receiving groove (20) in a direction approaching each other. There are two limit stop ribs (132). The two limit stop ribs (132) respectively protrude outwards from two opposite side walls of the fixing seat (13) and can form a limit fit with the two third limit stoppers (22).

8. The support rod device for a camp bed according to any one of claims 4 to 7, characterized in that: The second end of the connecting rod (4) has a first pin shaft (41); a first receiving groove (20) capable of receiving the side of the fixing seat (13) is provided on the side of the locking wrench (2) facing the fixing seat (13); at least two first locking holes (231) arranged at intervals along the length direction of the locking wrench (2) and a first sliding groove (232) connecting the first locking holes (231) are provided on two opposite side walls of the first receiving groove (20); and the two ends of the first pin shaft (41) can be inserted into and rotatably limited in the first locking holes (231) on the two opposite side walls of the first receiving groove (20).

9. The support rod device for a camp bed according to any one of claims 4 to 7, characterized in that: The second end of the connecting rod (4) is connected to a connecting seat (42) which can rotate relative to the connecting rod (4) and a pressing locking rod assembly symmetrically arranged on the left and right sides of the connecting seat (42); the locking wrench (2) is provided with a first receiving groove (20) on the side facing the fixing seat (13) in which the side of the fixing seat (13) can be received; the inner wall of the first receiving groove (20) is provided with at least two second locking holes (241) arranged at intervals along the length direction of the locking wrench (2) and a second sliding groove (242) connecting each of the second locking holes (241); the position where each of the second locking holes (241) and the second sliding groove (242) connect is a constriction (243); each of the second locking holes (241) and the second sliding groove (242) passes through the outer wall of the locking wrench (2) to the first receiving groove (20); each pressing locking rod assembly comprises a locking rod (43), a second elastic member (44) and a second pressing locking rod assembly. The second elastic member (44) is pressed between the locking rod (43) and the connecting seat (42), and the locking rod (43) always has a tendency to move toward a side away from the connecting seat (42). The outer end of the locking rod (43) passes through the second locking hole (241) or the second sliding groove (242) and is connected to the second pressing button (45) provided outside the locking wrench (2). The locking rod (43) includes a large rod portion ( The large rod (431) and the small rod (432), the large rod (431) is far away from the second push button (45), and the small rod (432) is close to the second push button (45), the large rod (431) can be inserted into the second locking hole (241), but cannot slide into the second sliding groove (242) through the shrinkage (243), and the small rod (432) can slide into the second sliding groove (242) through the shrinkage (243).

10. A camp bed, comprising a bed cloth (5), a first side rod (51) and a second side rod (52) arranged on the left and right sides of the bed cloth (5), and a support rod device arranged at the bottom of the bed cloth (5) and connected between the first side rod (51) and the second side rod (52), the support rod device comprising at least two groups of support rod assemblies (1) arranged at intervals along the length direction of the bed cloth (5), characterized in that: The support rod device adopts the support rod device for a camp bed according to any one of claims 1 to 7.

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